Dihydrochalcones and flavonolignans from Iryanthera lancifolia |
| |
| Authors: | Silva D H Davino S C Barros S B Yoshida M |
| |
| Affiliation: | Instituto de Qu?imica, Universidade de S?o Paulo, C.P. 26077, CEP 05599-970, S?o Paulo-SP, Brazil, Instituto de Qu?imica, Universidade Estadual Paulista, C.P. 355, CEP 14800-900, Araraquara-SP, Brazil, and Faculdade de Ci?enc. dhsilva@iq.unesp.br |
| |
| Abstract: | An extract from the pericarps of I. lancifolia afforded two dihydrochalcones (1 and 2) and two flavonolignans (3 and 4), with compounds 2-4 being of novel structure. The antioxidant activities of compounds 1-4 were evaluated through the measurement of malondialdehyde production, and Q(1/2) (concentration necessary for 50% inhibition of autoxidation) data were calculated. The Q(1/2) values obtained for 1-4 and the standard compounds alpha-tocopherol and quercetin were 6.9, 4.7, 5.5, 4.8, 12.1, and 7.6 microg/mL, respectively. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
